/ Dictionary / Index P polyimide: Meaning and Definition of Find definitions for: pol•y•im•ide Pronunciation: (pol"ē-im'īd, -id), [key] — n. any of a class of polymers with an imido group: resistant to high temperatures, wear, radiation, and many chemicals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Polyhymnia polyisobutylene Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language